I recently got some Denso 440cc injectors from a buddy of mine which was used on a H22 motor w/ a p72 hondata s100 w/ boost option. I know that stock h22 injectors require running a resistor box if using a p13 ecu, but if he was using a p72 ecu with hondata equipped, he didnt need to run the resistor box. Anyways, supposly he said they are 440, but as I recall denso never made any 440's, only 450cc (correct me if im wrong). They are the black top injectors and have denso written on the side of them. Here are my questions regarding them.

1. How can I tell if they are peak/hold or saturated injectors? So I can run a resistor box if needed.

2. What would be the cause of running some peak/hold injectors w/out a resistor box?

3. Would the peak/hold injectors have bad idle or even car start?

 

Put a fluke on the injectors and ohm them out. If the ohm is like 2-3 that is peak and hold. If the ohm is 11-14 that is saturated.

 

cool...ill try that.